A H. oligactis, living polyp from Lake Baikal. B–F morphological variability of holotrichous isorhizas B, F H. baikalensis; C, D, E H. oligactis (B Bolshie Koty C Posolskiy Sor D Chivyrkuiskiy Bay F Sobolev) E Photo adapted from Schuchert (2010). J desmonemes F, G atrichous isorhizas H, K holotrichous isorhizas I stenoteles. Scale bars: 5 mm (A), 10 μm (B–K).

 
 
  Part of: Peretolchina TE, Khanaev IV, Enushchenko IV, Sherbakov DY, Kravtsova LS (2020) The diversity of the Baikal lineage of Hydra oligactis Pallas, 1766: molecular and morphological evidence. ZooKeys 912: 1-12. https://doi.org/10.3897/zookeys.912.46898